Please note that almost all of these are suggestions, and can be implemented or ignored at your discretion. Any changes I deem necessary for the article to pass GA standards I will bold.
Lede
I've made some copy edits, feel free to revert any of them.
John and Andronikos ruled Thessalonica with the full imperial title, suggest John and Andronikos ruled Thessalonica with the full imperial title of Byzantine emperor,
Changed to "full Byzantine imperial title" rather than "title of Byzantine emperor" since the title they used wasn't Byzantine emperor.
with John VII previously believed to have been childless. suggest who had previously believed John VII to be childless.
John VII had briefly ruled the Byzantine Empire in 1390, through usurping the throne from his grandfather suggest John VII had briefly ruled the Byzantine Empire in 1390, after usurping the throne from his grandfather
explicitly identifying the dead child as an emperor by the name of Andronikos, son of John VII, who died seven years old suggest expliclity identifying the name, father, and age of the child, as well as confirming that he was emperor.
Please note that almost all of these are suggestions, and can be implemented or ignored at your discretion. Any changes I deem necessary for the article to pass GA standards I will bold.
Lede
I've made some copy edits, feel free to revert any of them.
John and Andronikos ruled Thessalonica with the full imperial title, suggest John and Andronikos ruled Thessalonica with the full imperial title of Byzantine emperor,
Changed to "full Byzantine imperial title" rather than "title of Byzantine emperor" since the title they used wasn't Byzantine emperor.
with John VII previously believed to have been childless. suggest who had previously believed John VII to be childless.
John VII had briefly ruled the Byzantine Empire in 1390, through usurping the throne from his grandfather suggest John VII had briefly ruled the Byzantine Empire in 1390, after usurping the throne from his grandfather
explicitly identifying the dead child as an emperor by the name of Andronikos, son of John VII, who died seven years old suggest expliclity identifying the name, father, and age of the child, as well as confirming that he was emperor.